Armory of the Grand Masters of the Sovereign Military Order of Saint-John

The following armory is based on a set of late 19th-century plates reproduced
(without citation) in Bascapè and Del Piazzo (pp.287ff). These plates
contain a number of mistakes, particularly in spelling and in attribution,
so I checked the coats as much as possible with other sources
(Rietstap=R, Jougla de Morenas=JM, Woodward=W; I have also used ANF=Annuaire
de la Noblesse de France, 1845, article on the Crusader rooms of Versailles,
also described
here,
but preferred the other sources when they disagreed). Those arms that I could
not confirm are between brackets. Even when it is confirmed
in another source that the arms were used by a family of the same name, I am not
sure that the author of the plates actually checked that the Master belonged
to that family, or ever used those arms himself. In the case of Arnaud de Comps
or Roger des Moulins, they may have lived before the arms were adopted by those
families. Some arms, such as those of Gérard, are probably purely
fictitious. Only after 1300 am I confident that the arms described here were
in fact those used by the Grand Masters, because we have contemporary
epigraphic, sigillographic and numismatic evidence.

Giovanni Tommasi (1731-1805, appointed 1803):Barry of six Or and gules.

Johann Baptist Ceschi de Santa Croce (1827-1905, appointed 1879):Quarterly, 1.
and 4. Azure a griffon crowned or, 2. and 3. per fess gules and argent
a cross patty counterchanged; over all per fess, sable a lion issuant crowned
or its tail forked, and sable three bars or. (R)

Lodovico Chigi (1866-51, elected 1931):Quarterly, 1. azure an oak-tree eradicated
or, its four branches knotted-saltireways (Della Rovere), 2 and 3. Gules
in base a mount of six coupeux and in chief and estoile or (Chigi), 4.
Azure a fess between an estoile of six rays in chief and a mount of three
hillocks in base or (Albani). (Gotha)

Angelo de Mojana di Cologna (1905-88, elected 1962):Azure a fess ??? gules between
three fleurs-de-lys or.